Important Channels for iKAGRA
Here is a list of important channels for iKAGRA Test Run. Time is given in JST. Units are in counts if not specified.
Important settings to remember
MICH modulation frequency: 16.873071 MHz (13 dBm at RF oscillator source); (see klog #616)
- K1:LSC-MICH filter settings
- March run: zero at 0.2, 7 Hz / pole at 0.02, 200, 200 Hz / notch at 15.3 Hz / GAIN 10 (DC gain 100)
- April run: zero at 0.2, 70 Hz / pole at 0.02, 2000, 2000 Hz / GAIN 50 (DC gain 500)
- UGF servo "gain" (only available on April run)
- K1:LSC-OLTCALIB_MTRX_1_1 = 0.8 (openloop gain at fcal = 80 Hz is controlled to be 1/0.8; UGF 94 Hz)
PMC related
Channel Name |
Mar 25 9:00 - Mar 31 17:00 |
Apr 11 9:00 - Apr 12 13:00 |
Apr 12 16:10 - |
K1:GRD-PSL_STATE_N |
PMC guardian state. If this is 1000, PMC is locked. |
Same |
Same |
K1:PSL-PMC_TRANS_DC_OUT_DQ |
PMC transmitted power. If this is ~6, PMC is locked. |
Same |
Same |
K1:PSL-PMC_MIXER_OUT_DQ |
PMC error signal. |
Same |
Same |
K1:PSL-PMC_FAST_MON_OUT_DQ |
PMC feedback signal to PMC PZT. |
Same |
Same |
K1:PSL-PMC_SLOW_MON_OUT_DQ |
PMC feedback signal to laser temperature. |
Same |
Same |
IMC related
Channel Name |
Mar 25 9:00 - Mar 31 17:00 |
Apr 11 9:00 - Apr 12 13:00 |
Apr 12 16:10 - |
K1:GRD-IMC_LOCK_STATE_N |
IMC guardian state. If this is 1000, IMC is locked. |
Same |
Same |
K1:IMC-MCL_TRANS_OUT_DQ |
IMC transmitted power. If this is ~0.4, IMC is locked. |
Same |
Same |
K1:IMC-MCL_SERVO_OUT_DQ |
IMC feedback signal to MCe. |
Same |
Same, but MCi feedback was added on Apr 12 13:44 JST (klog #1507). |
K1:IMC-REFL_SERVO_FLTIN_OUT_DQ |
IMC error signal. |
Same |
Same |
K1:IMC-REFL_SERVO_FLTFAST_OUT_DQ |
IMC feedback signal to the laser PZT. |
Same |
The port for a laser PZT feed back signal have been changed to FLTSLOW channel. |
K1:IMC-REFL_SERVO_FLTSLOW_OUT_DQ |
Not used |
Not used |
IMC feedback signal to the laser PZT. |
K1:VIS-MCI_DITHERINF_Y_IN1_DQ |
N/A |
MCi dither asc error signal. |
Same |
K1:VIS-MCI_DITHERINF_Y_OUT_DQ |
N/A |
MCi dither asc feedback signal to the MCi. |
Same |
K1:VIS-MCE_DITHERINF_Y_IN1_DQ |
N/A |
MCe dither asc error signal. |
Same |
K1:VIS-MCE_DITHERINF_Y_OUT_DQ |
N/A |
MCe dither asc feedback signal to the MCe. |
Same |
Michelson related
Channel Name |
Mar 25 9:00 - Mar 31 17:00 |
Apr 11 9:00 - Apr 12 13:00 |
Apr 12 16:10 - |
K1:GRD-MICH_LOCK_STATE_N |
MICH guardian state. If this is 1000, MICH is locked　and calibration lines are injected. |
same, but there was a bug (klog #1516) |
Same (bug was fixed on Apr 13 10:54:30 JST) |
K1:LSC-REFL_PDA1_DC_OUT_DQ |
Fringe signal in DC. Used for the error signal. |
Same, but not used for the error signal. |
Same |
K1:LSC-REFL_PDA1_RF17_I_OUT_DQ |
N/A |
Fringe signal in RF, before phase rotation. |
Same. |
K1:LSC-REFL_PDA1_RF17_Q_OUT_DQ |
N/A |
Fringe signal in RF, before phase rotation. |
Same. |
K1:LSC-REFL_PDA1_RF17_I_ERR_DQ |
N/A |
Fringe signal in RF (demodulated in I phase). Used for the error signal. |
Same, but not used for the error signal. Was not DQ channel before Apr 14 13pm (use I_OUT_DQ instead; IQ rotation angle: -15 deg). |
K1:LSC-REFL_PDA1_RF17_Q_ERR_DQ |
N/A |
Fringe signal in RF (demodulated in Q phase). |
Same, but used for the error signal. Was not DQ channel before Apr 14 13pm (use Q_OUT_DQ instead; IQ rotation angle: -15 deg). |
K1:LSC-MICH_OUT_DQ |
Feedback signal to ETMs. |
Feedback signal to ETMs before gain adjustment from UGF servo. |
Same |
K1:LSC-UGF_SERVO_OUT_DQ |
N/A |
Gain adjustment of the feedback signal for UGF servo. |
Same |
K1:LSC-MICH_ERR_CAL_OUT_DQ |
Roughly calibrated GW signal in m/rtHz. |
Same |
N/A |
K1:LSC-MICH_CTRL_CAL_OUT_DQ |
N/A |
Online-calibrated GW signal in nm. |
Same |
K1:LSC-MICH_LKIN_CAL(1|2)_A_(REAL|IMAG)_OUT_DQ |
Demodulated feedback signal after calibration lines injection. CAL1 for 80 Hz (used for UGF servo), CAL2 for 135 Hz. |
Same |
N/A |
K1:LSC-MICH_LKIN_CAL(1|2)_B_(REAL|IMAG)_OUT_DQ |
Demodulated feedback signal before calibration lines injection. CAL1 for 80 Hz (used for UGF servo), CAL2 for 135 Hz. |
Same |
N/A |
K1:LSC-MICH_CAL_A(1|2)_(REAL|IMAG)_OUT_DQ |
N/A |
N/A |
Demodulated feedback signal after calibration line injection. A1 for 80 Hz (used for UGF servo), A2 for 135 Hz. |
K1:LSC-MICH_CAL_B(1|2)_(REAL|IMAG)_OUT_DQ |
N/A |
N/A |
Demodulated feedback signal before calibration line injection for UGF servo. B1 for 80 Hz (used for UGF servo), B2 for 135 Hz. |
K1:LSC-ACT_DEMOD1_(I|Q)_OUT_DQ |
N/A |
N/A |
Demodulated error signal for ETMX actuator efficiency monitor (111 Hz calibration line). |
K1:LSC-ACT_DEMOD2_(I|Q)_OUT_DQ |
N/A |
N/A |
Demodulated error signal for ETMY actuator efficiency monitor (113 Hz calibration line). |
K1:LSC-ACT_DEMOD3_(I|Q)_OUT_DQ |
N/A |
N/A |
Demodulated error signal for BS actuator efficiency monitor (115 Hz calibration line). |
K1:LSC-IMT_QPDA1_(PIT|YAW)_OUT_DQ |
QPD signal monitoring IMMT1 transmitted beam, calibrated in um. |
Same |
Same |
Suspension related
Channel Name |
Mar 25 9:00 - Mar 31 17:00 |
Apr 11 9:00 - Apr 12 13:00 |
Apr 12 16:10 - |
K1:VIS-$(OPTIC)_TM_OPLEV_$(DOF)_OUT_DQ |
Oplev signal for suspensions in urad. $(OPITC)=MCI,MCO,MCE,PR3,BS,EX,EY and $(DOF)=PIT,YAW. |
Same |
Same |
PEM related
Channel Name |
Mar 25 9:00 - Mar 31 17:00 |
Apr 11 9:00 - Apr 12 13:00 |
Apr 12 16:10 - |
K1:PEM-$(PLACE)_SEIS_$(AXIS)_SENSINF_OUT_DQ |
N/A |
Trillium seismometer signal. $(PLACE)=BS,EX,EY and $(AXIS)=NS,WE,Z. Calibration was done wrong. |
Same, but wrong calibration filter was turned off on Apr 14 16pm (klog #1537). Calibration was corrected on Apr 15 22:30 in the unit of m/s (klog #1547). |
K1:PEM-$(PLACE)_SEIS_$(AXIS)_SENSINF_IN1_DQ |
N/A |
Trillium seismometer signal. $(PLACE)=BS,EX,EY and $(AXIS)=NS,WE,Z. Uncalibrated signal. Use 754.3 V*s/m (+/- 5%) for the calibration. |
Same. |
K1:PEM-MCF_SEIS_Y_SENSINF_OUT_DQ |
N/A |
RION seismometer signal, calibrated in the unit of m. |
Same, but calibration was changed on Apr 15 22:30 in the unit of m/s^2 (klog #1547). |
K1:PEM-$(PLACE)_SEIS_$(AXIS)_BLRMS_LOW_OUT_DQ |
N/A |
Seismometer signal filtered for earthquake bands (30-100mHz). |
Same |